Diagnose (troubleshoot) the causes of incorrect operation of warning devices and other driver information systems; determine necessary action.
Lesson Plan for
AUT 186-187/AUT 292
Automotive Service Technology Section C/Automotive Special Problems
Course HS Title: / Automobile Service Technology/Special Problems / Program:KCTCS Courses included in HS Title: (Lesson is prepared for course highlighted.)
KCTCS Course No. / KCTCS Course Title
Introduction/Context / This lesson will instruct the student on how to Diagnose (troubleshoot) the causes of incorrect operation of warning devices and other driver information systems, and determine necessary action. Knowledge of these techniques and the skills required to correct problems associated with this task are necessary for a student to acquire if they wish to compete for high paying, high skilled jobs in an Automotive Repair Facility. Entry level technicians need to be able to perform this task to 100% accuracy. Incorrectly performing this task can lead to an automobile accident or create customer satisfaction issues.
Prepared By / School / Date:
Grade Level / No. Students / No.IEP's: / Lesson Length:
Task
Diagnose (troubleshoot) the causes of incorrect operation of warning devices and other driver information systems; determine necessary action.
No. / Objective
1 / Given the proper tools and instruction, the student will be able to diagnose (troubleshoot) the causes of incorrect operation of warning devices and other driver information systems, determine necessary action, and pass a written test covering the task with 100% accuracy.
Connections:
Skills Standards:OH 001
OH 002
OH 003
OD 002
OD 003
OD 005
Common Core Technical Standards:
TD-SYS-2
New Common Core Standards:
RST 11-12.2
RST 11-12 3
A-CED-4
N-Q-1
New Generation Science Standards:
HS-PS2-5.
HS-PS3-3.
HS-PS3-5.
INSTRUCTIONAL MATERIALS/TECHNOLOGY
Teacher Designed Materials and Other Handouts
Textbooks and Workbooks
Jack Erjavec / Automotive tecnology/ A Systems Approach / 4th / Thomson Delmar learning / 537-543
Equipment
As needed / Dvom / Various
As needed / scan tool / Various
Content/Presentation/Demonstration Outline
Items to be check in a malfunctioning gauge or indicator system include the following; Fuses, Indicator bulbs, Detector switches (indicator System), Sender units (gauge system), IVR (gauge system ), Gauge (gauge system), Keep in mind intermittent problems are usually caused by: Dirty or corroded connections, Wire chafing, Poor mating of connector halves, backed out connector terminals and Connector body damage.
Inform students that many instrument and warning devices are linked to the vehicle body control module. In many cases, they are also part of the multiplexing network. Before trouble shooting a gauge or warning system, check the service manual to identify any special procedure or precautions. Often you will need to retrieve codes from the body computer during diagnosis. This procedure involves the use of a scan tool. Some scan tools have the ability to activate the instrument cluster for testing. The scan tool is plugged into the system diagnostic connection. Some Manufacturers provide single diagnosis connector. Always refer to the correct service manual for each vehicle. Once the DTC (Diagnostic Trouble Code) is retrieved, follow the appropriate diagnostic chart for instruction on isolating the fault
Inform students about common types of Warning Devices and Gauges.
*Traction/Stability Control Lamp: This lamp or lamps are illuminated with red lights when there is a problem with the traction control and/or stability control systems. The lamps are lit with yellow lights when the system is actively regulating drive torque and braking force.
*Oil Pressure Indicator Light: The light indicates whether the oil pump is feeding oil under normal pressure to various parts of the engine. The indicator light is operated by an oil pressure switch located in the engine's lubricating system. Some vehicles illuminate this lamp in yellow or red to indicate the action the driver should take, red meaning the engine has an oil pressure problem and the engine should be shut down and yellow indicating the oil level is low and should be topped off as soon as possible.
*Charge Indicator Light: The light indicates the condition of the charging system. If there is something wrong with the charging system, the light comes on while the engine is running. Transmission Indicator: This is part of an automatic transmission's control system. If the system detects a fault, it may operate the transmission in the fail-safe mode and will illuminate the warning light to inform the driver of the problem and to alert him or her that the transmission may not be working normally.
Other Warning Devices and Gauges include:
*Brake Warning Light: When this light is lit, it is an indication that the parking brake is engaged. Some vehicles use the same warning lamp to indicate hydraulic system failure.
*Brake Pad Indicator: This lamp illuminates when the sensors at the wheel brake units see that the brake pads are worn too thin. With the lamp lit, the driver should avoid hard braking and have the brakes serviced as soon as possible.
*Brake Fluid Level Warning Light: This light is connected to the brake fluid level sensor in the brake fluid reserve tank. If brake fluid decreases to less than the specified volume in the reservoir, the sensor is actuated and the light comes on while the engine is running.
*Low Fuel Warning Light: This particular component monitors the fuel level. When it drops below a quarter full, an electronic switch in the module closes and power is applied to illuminate the low fuel indicator light.
*Check Engine Warning Light: This warning is provided to indicate the condition of the vehicle's engine and its control systems. If there is a fault in the system, the warning light comes on while the engine is running. Check engine lights may be triggered by oil pressure, coolant temperature, or by the engine control computer that monitors several engine systems and illuminates the warning light whenever it senses a fault. It may also illuminate when the computer has stored a fault or diagnostic code in its memory.
*Check Filler Cap: This lamp will be illuminated when the gas filler cap is not tight or off and when the engine control system senses a problem with the fuel system.
*Door Ajar Warning Light: When the ignition is turned on, if the doors are left open or are not properly closed, this light comes on.
* Washer Fluid Lamp: Obviously the purpose of this lamp is to inform the driver of a low level in the windshield washer fluid reservoir.
*Coolant Lamp: The purpose of this lamp is to inform the driver of low coolant levels in the cooling system. Antilock Brake Light: If an antilock brake system fault is present, the antilock brake module grounds the indicator circuit, and the antilock light goes on.
*Air Bag Readiness Light: The air bag readiness light lets the driver know the air bag system is working and ready to do its job. It lights briefly when the ignition is turned on. A malfunction in the air bag system will cause the light to stay on continuously or to flash.
*Fasten Belts Indicator: When the ignition is turned to run or start, the warning chime module applies voltage to illuminate the fasten belts indicator for six seconds, whether or not the driver's belt is buckled. *Tire Pressure Monitor: When a low inflated or flat tire is found, this warning light is turned on. Some systems illuminate this warning lamp in red or yellow: Red means there is an excessively low or flat tire and yellow means a tire has low pressure. Some systems also emit a sound to alert the driver.
Applications/Practice
Evaluation and feedback Prior to Testing or Lab Work
STUDENT ASSESSMENT:(Assess student progress with performance criteria.)
IMPACT--Reflection/Analysis of Teaching and Learning: (How did students’ progress in relation to the state objectives? Was the instruction successful? Analyze samples of student work particularly that which is unsatisfactory, for the purpose of planning further instruction.)
REFINEMENT--Lesson Extension and Follow-up: (To be filled in as the lesson is modified during initial planning and/or during the teaching learning process.)